eBeam Edge + Wireless Complete - 4 Markers and Charging Cradle Utilizing the newest eBeam Interactive Suite v3.2 which is compatible with Chromebooks and Android tablets. Turn any ordinary whiteboard into a multimedia interactive classroom experience Utilize existing surfaces (Walls, LCD screens, glass, tables, etc.) - now comes with LCD Bracket and Rechargeable stylus - The Battery works for up to 15 hours and recharges in 3. Also, conduct on-line meetings and share the contents of your program. Up to 25 people can attend - and its FREE.You must provide your own voice system. Marker Pack allows whiteboard capture in addition to projection annotation capabilities